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Accel Copper Core Spark Plugs

Since the mid 1980's,
ACCEL"s U-Groove Spark plugs have set the standard
for High Performance Spark Plugs. ACCEL
Engineers developed and patented the U-Groove
technology which permitted the spark to develop a
much larger, hotter and fuller flash front. That effectively
gave a more complete burn of the air/fuel
mixture in the combustion chamber.
Over the past 25 years engine head design and
fuel management technology has changed. As a
result, ACCEL is moving away from the U-Groove
construction to the familiar "conventional" style
ground electrode. In addition, the upper insulator
will now be white instead of yellow, and available in
convenient 4-packs.
Bottom line...
This one-piece construction spark plug with
conventional ground electrode provides exceptional performance and value by producing:

Hotter Spark/Faster Burn Rate for more power at
high rpms

Improved Throttle Response, fuel economy, and
reduce fouling

Reduced Mis-fires

Purified Alumina insulator to prevent arcing

Machine-rolled threads to protect heads

Note: The higher the Part Number, the hotter the plug. Example: 111-0111-4 is the coolest plug and 111-0116-4 is the hottest in that specific style spark plug.

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